leaking valve actuator in a baxi 133HE

[EveyUK]

Hi,

I'm selling my house. as part of the sale the buyer wants the gas fire and boiler serviced. They are paying for an engineer to come round the day after tomorrow.

The problem is that my wife has noticed a wet spot below the boiler today.

After taking the cover off I can see drops forming slowly and falling from the honeywell VC4012 valve actuator.

What a time to start leaking!!

Is this part expensive to replace?

Cheers

Colin

 

[baxpoti]

The valve actuator doesn't have any water in it,
Remove the actuator and locate the water leak.

 

[EveyUK]

The valve actuator doesn't have any water in it,
Remove the actuator and locate the water leak.

So it's something behind it for the water to run onto it, it's dry above it.

I can't see any path onto it for the water.

In the manual it's called a three-way diverter valve head, it fits against a three way diverter then a gasket then the pump. I can't feel any water at the gasket.

 

[baxpoti]

Try using some paper towel to locate the leak.

 

[Evox]

Hi,

Over a year since any activity on this thread but I seem to now suffer the same problem on my Baxi Combi 100 HE Plus.

Been running this boiler totally problem free, apart from one reset over a year ago, since October 2005. Judging by some of the posts here that's pretty good going.

Anyway over the last week I noticed a small leak which now seems to how progressed into drip every 5 minutes or so from the Valve Actuator only in CHW mode. Having read Baxpoti's reply I have totally isolated the actuator from everything with various bits of paper towel.

As far as I can see the leak is coming through the valve actuator internally not dripping from above or dripping onto the pump then running down into the actuator. Is there a path internally through which water could pass from it's connection to the pump? There is absolutely no water present at the actual interface between the actuator and the pump.

Any help would be much appreciated.

 

[baxpoti]

drip every 5 minutes or so from the Valve Actuator

There is no water in the actuator

only in CHW mode.

There is no CHW mode

I have totally isolated the actuator from everything

Have you removed the actuator?

As far as I can see the leak is coming through the valve actuator internally not dripping from above or dripping onto the pump then running down into the actuator.

Contradicted below

Is there a path internally through which water could pass from it's connection to the pump?

Yes

There is absolutely no water present at the actual interface between the actuator and the pump.

Contradicted above

From the above I'm assuming the 3 way valve is leaking into the actuator

Drain down and identify, probably replace prt No.241361.

 

[baxpoti]

drip every 5 minutes or so from the Valve Actuator

There is no water in the actuator

only in CHW mode.

There is no CHW mode

I have totally isolated the actuator from everything

Have you removed the actuator?

As far as I can see the leak is coming through the valve actuator internally not dripping from above or dripping onto the pump then running down into the actuator.

Contradicted below

Is there a path internally through which water could pass from it's connection to the pump?

Yes

There is absolutely no water present at the actual interface between the actuator and the pump.

Contradicted above

From the above I'm assuming the 3 way valve is leaking into the actuator

Drain down and identify, probably replace prt No.241361.

Starting a 'new' thread would get more response!

 

[Evox]

Thanks very much for your quick response,

I know the actuator doesn't have any water in it I read it in your post that's why I said it appears to be coming through the actuator.

I haven't removed the actuator - we're still using it. I have however, to the best of my abilities, isolated the actuator from external drips with paper towel - leading me to conclude, with no external evidence of a water path, that there must be a route internally. Which you say there is.

The "Installation & Servicing Instructions" I printed out for this unit in 2005 refers to Central Heating Mode and Domestic Hot Water Mode. I personally cheekily, and incorrectly, coined the acronym CHW.

From your experience would the first exit point for any water leak due to a faulty 3-way valve be the lowest point on the actuator?

Is it's replacement an exspenive job?

I was going to start a new thread but didn't due to a morbid fear of criticism.

Cheers for you help.

 

[saltcote]

Hi
I have a nother Baxi combi 133he plus exhibiting problems with the same area.

The unit has been funtioning well and has only been installed for say 18 months and used for 12 months.

The Honeywell VC4012 is making clicking noises every 2 seconds almost as though the pilot needs to be re-ignited. Is is like the old days where you could tap them with a small hammer and it would free up the valve?

I called Baxi 35 minutes on hold for technical support, and gave up, tried service about the same time and gave up. What a surprise Sales was answered in 1 second, then I was put through to the out of warranty team. £299 for a service or £310 for a different type of service with 12 months warranty!

Wake up Baxi if you want to rip people off properly get yourself a premium rate line charged at £1.50 a minute, then get us to use reverse billing text messages to discuss things with you and oooh what about offering prize draws.

Can anyone offer some guidance on this please

Many thanks
Paul
[/b]

 

[spacethegas]

new actuator required.

 

[ChrisR]

View media item 2832

 

[saltcote]

Thanks Chris,
Your diagram is very useful, it is item 424 (or what it plugs into) that is clicking every second, I assume this will need replacing and that it's a non serviceable part?
Where would you locate a vendor for this?
Many thanks
Paul

 

[ChrisR]

424 could be clicking, blue part is a hard plastic with sliding parts with O rings inside. They aren't very good they stick often, and leak occasionally.

424 Valve - Plastic - Diverter 424154
425 Screw M4 x 25mm Plastite 410037
426 Valve Body complete with Gasket 425976

Part numbers are Parts Center
http://www.partscenter.co.uk/hrpc/default.html

 

[juco]

I know it is an old thread but how do you get part 424 off as I have a similar problem and it may need replacing.

thanks

 

[Agile]

There is usually a black button that you hold in while pulling, close to where it attaches to the next part.

Sometimes after leaking they can get gunged up and be difficult to separate.

Tony